Resolution and absolute configuration of some α-aminoacetals: en route to enantiopure N-protected α-aminoaldehydes
作者:Muriel Albalat-Serradeil、Géraldine Primazot、Didier Wilhelm、Jean-Claude Vallejos、Nicolas Vanthuyne、Christian Roussel
DOI:10.1007/s00726-011-1117-6
日期:2012.8
The first successful resolution of rac-α-aminoacetals via diastereoisomeric salt formation with optically pure N-protected aminoacids is reported. The absolute configuration assignment of α-aminoacetal enantiomers is performed by an entirely non-racemizing chemical correlation method involving N-protection and a new efficient hydrolysis step followed by a reduction of the resulting N-protected α-aminoaldehyde
据报道,通过与光学纯的N-保护的氨基酸形成非对映异构体盐,成功地分离了rac - α-氨基缩醛。α-氨基缩醛对映异构体的绝对构型分配是通过涉及N-保护的完全非消旋化学相关方法和新的有效水解步骤,然后还原所得的N-保护的α-氨基醛中间体进行的。举例说明了光学富集的α-氨基缩醛的消旋方法,以使两种对映异构体均价。